Quantum V1 Swingweight and Balance

I recently obtained a Volkl Quantum V1 OS. The first time I used it it felt a bit "tiny". I'm not a racquet tech guru, but I suppose this could be due to its relatively light weight (10.5oz) and also being 5 pts headlight. The swingweight is only 309.

I tried adding a total of 9 grams of lead tape at the 3 & 9 positions in the hoop. After this it played much better for me.

Based on the data given above, I'm curious as to what the racquet's balance point is now and what its swingweight is? I did a few searches but I couldn't figure it out for myself.

I just noticed that this racquet, which I purchased used off of ****, is only 27" long. TW's Racquet Finder page shows the Quantum V1 OS as being 27.6" long. Is the info on the Racquet Finder page incorrect or did I get a Quantum V1 OS that someone shortened at some point??